It's hard to know how much you've worked out and at what stage you're at.
For a start you need LOR advanced to have access to dmx and E1.31.
Creating channels is pretty much as easy as right clicking over the channel list and adding channels or rgb channels. I find it easier (for dmx/e1.31) to add a device and it will then give you an option of automatically numbering you channels if you start at #1. The channels then get configured as dmx channels with a universe number and channel number. You can convert existing channels by right clicking and changing to RBG channel where it will then ask if you want to do more than just the 1.